A resistance of 900 ohm is connected in series with a galvanometer of resistance 100 ohm. A potential difference of 1 V produces a deflection of 100 division in the galvanometer. Find the figure of merit of galvanometer.

A resistance of 90Omega is connected in series with a alvanometer of resistance 100Omega . A potential difference of 1V produces a deflection of 100 divisions inthe alvanometer.Find the figure of merit galvanometer.

A bulb whose resistance is 10 ohm is connected to a 6 V battery. Calculate the potential difference across the bulb.

A galvanometer of resistance 50 Omega is connected to a battery of 3 V along with resistance of 2950 Omega in series. A full scale deflection of 30 divisions is obtained in the galvanometer. In order to reduce this deflection to 20 division the above series resistance should be

A resistor of resistance 20 ohm is connected across a potential difference of 20 V for one minute. Calculate the heat produced in the resistor.

Two resistances of 400 ohm and 800 ohm are connected in series with 6 volt battery of negligible internal resistance. A voltmeter of resistance 10,000ohm is used to measure the potential difference across 400 ohm. The error in the measurement of potential difference in volt approximately .

A 100 ohm iron is connected to a 220 volt, 50 cycles wall plug. What is its peak potential difference.

A moving coil galvanometer of resistance 100Omega is used as an ammeter using a resistance 0.1 Omega . The maximum diflection current in the galvanometer is 100 muA . Find the minimum current in the circuit so that the ammeter shows maximum deflection

A galvanometer of resistance 80 ohm gives full scale deflection for a current of 4 mA. How will you convert it into a voltmeter of range 0.5 V?